/* roulang page: index */
:root{
  --brand-50:#FFF1EC;--brand-100:#FFE0D5;--brand-500:#F2542D;--brand-600:#D93F1B;--brand-700:#B32F12;
  --accent-500:#1FB6A6;--accent-50:#E6F7F5;
  --lime-400:#C8F45C;--lime-600:#8FBE1F;
  --ink-900:#12151A;--ink-700:#2B313B;--ink-500:#5B6472;--ink-300:#9AA3B0;
  --line:#E6E2DB;--bg:#F7F5F1;--surface:#FFFFFF;--dark:#14171C;
  --grad:linear-gradient(135deg,#F2542D 0%,#FF8A3D 55%,#C8F45C 100%);
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:24px;--r-xl:32px;
  --sh-1:0 1px 2px rgba(18,21,26,.04),0 8px 24px -12px rgba(18,21,26,.10);
  --sh-2:0 18px 40px -20px rgba(18,21,26,.22);
  --sh-brand:0 12px 30px -14px rgba(242,84,45,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:0;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
img{max-width:100%;display:block;border:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--lime-600);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{padding:0 40px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:rgba(255,255,255,.8);font-size:12.5px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.dot{width:6px;height:6px;border-radius:50%;background:var(--lime-400);flex:none}
.topbar-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-domain{color:rgba(255,255,255,.45);padding-left:10px;border-left:1px solid rgba(255,255,255,.14)}
.topbar-right{display:flex;align-items:center;gap:18px;flex:none}
.topbar-link:hover{color:#fff}
.topbar-link.accent{color:var(--lime-400)}
.topbar-link.accent:hover{text-decoration:underline;text-underline-offset:3px}
@media(max-width:767px){
  .topbar-inner{height:32px;font-size:12px}
  .topbar-text,.topbar-domain{display:none}
}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);transition:height .24s var(--ease),box-shadow .24s var(--ease)}
.site-header.scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px;transition:height .24s var(--ease)}
.site-header.scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:32px;height:32px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-brand)}
.brand-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.6}
.brand-text{font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.nav-menu{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-link{position:relative;display:block;padding:12px 14px;font-size:16px;font-weight:600;color:var(--ink-700);border-radius:var(--r-xs);min-height:44px;line-height:20px}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:6px;height:2px;background:var(--grad);border-radius:2px;transition:left .22s var(--ease),right .22s var(--ease)}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{left:14px;right:14px}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.burger{display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:4px}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
@media(max-width:1023px){
  .nav-menu{display:none}
  .burger{display:flex}
  .nav-actions .btn{display:none}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:999px;font-size:16px;font-weight:600;line-height:1;white-space:nowrap;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 36px -14px rgba(242,84,45,.55)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-outline{border:1.5px solid rgba(18,21,26,.14);color:var(--ink-900);background:transparent}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.btn-ghost{padding:0;height:auto;border-radius:0;color:var(--brand-600);font-weight:600}
.btn-ghost svg{transition:transform .2s var(--ease)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-lg{height:54px;padding:0 30px}
.btn-sm{height:42px;padding:0 20px;font-size:15px}
.btn-block{width:100%}

/* ---------- 移动端抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(18,21,26,.4);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease)}
.drawer.open{opacity:1;visibility:visible}
.drawer-inner{position:absolute;inset:0;background:#fff;display:flex;flex-direction:column;transform:translateY(-8px);transition:transform .24s var(--ease)}
.drawer.open .drawer-inner{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);font-size:22px;line-height:1;color:var(--ink-700);display:flex;align-items:center;justify-content:center}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:20px;overflow-y:auto;flex:1}
.drawer-item{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:56px;padding:0 16px;border-radius:var(--r-md);background:var(--bg);border:1px solid var(--line);font-size:16px;font-weight:600;color:var(--ink-900)}
.drawer-item svg{width:16px;height:16px;stroke:var(--ink-300);fill:none;stroke-width:1.6}
.drawer-item:hover,.drawer-item.active{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-600)}
.drawer-foot{padding:16px 20px calc(16px + env(safe-area-inset-bottom));border-top:1px solid var(--line)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 72px}
.hero-bg{position:absolute;inset:0;pointer-events:none;background:
  radial-gradient(420px 420px at 88% 8%,rgba(242,84,45,.08),transparent 70%),
  repeating-linear-gradient(45deg,rgba(18,21,26,.05) 0 1px,transparent 1px 22px)}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:600;line-height:1.4}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500)}
.hero h1{margin-top:20px;font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:800}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.85;color:var(--ink-500);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:38px;max-width:620px}
.stat{padding:16px 18px;border-radius:var(--r-md);background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1)}
.stat-num{display:block;font-size:clamp(24px,2.6vw,32px);font-weight:800;color:var(--ink-900);line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--ink-500);line-height:1.6}
.hero-media{position:relative;border-radius:var(--r-xl);overflow:hidden;aspect-ratio:4/5;box-shadow:var(--sh-2);background:var(--dark)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(18,21,26,.62),rgba(242,84,45,.28))}
.hero-media::after{content:"";position:absolute;right:0;bottom:0;width:0;height:0;border-style:solid;border-width:0 0 56px 56px;border-color:transparent transparent rgba(200,244,92,.85) transparent}
.status-badge{position:absolute;top:20px;left:20px;display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;background:rgba(18,21,26,.72);color:var(--lime-400);font-size:12px;font-weight:600;letter-spacing:.02em}
.status-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime-400)}
.float-card{position:absolute;right:20px;bottom:20px;left:20px;padding:18px 20px;border-radius:var(--r-md);background:#fff;box-shadow:var(--sh-2);display:flex;align-items:center;gap:16px}
.float-num{font-size:38px;font-weight:800;line-height:1;color:var(--brand-600);font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.float-text{font-size:13.5px;line-height:1.6;color:var(--ink-500)}
@media(min-width:1024px){
  .hero{padding:72px 0 96px;min-height:560px;display:flex;align-items:center}
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px}
  .hero-media{aspect-ratio:4/5}
}
@media(min-width:576px){.stats{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.26;font-weight:700;position:relative;padding-left:16px}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--grad)}
.section-desc{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:680px;padding-left:16px}
.section-dark{background:var(--dark);color:rgba(255,255,255,.72)}
.section-dark .section-title,.section-dark h3,.section-dark h4{color:#fff}
.section-dark .section-desc{color:rgba(255,255,255,.62)}
@media(min-width:1024px){.section{padding:104px 0}}
@media(min-width:1280px){.section{padding:120px 0}}

/* ---------- 权益对比 ---------- */
.compare-wrap{max-width:1280px;margin:0 auto}
.table-wrap{display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.compare-table{width:100%;border-collapse:collapse;font-size:15px}
.compare-table th,.compare-table td{padding:0 22px;text-align:left;vertical-align:middle}
.compare-table thead th{border-bottom:1px solid var(--line);padding-top:0;padding-bottom:0;vertical-align:top;font-weight:700}
.compare-table tbody td{height:56px;border-bottom:1px solid var(--line);color:var(--ink-700)}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody tr:hover{background:rgba(255,241,236,.6)}
.col-feature{font-weight:600;color:var(--ink-900);width:24%}
.tier-head{position:relative;display:block;padding:26px 0 22px}
.tier-head .tier-name{display:block;font-size:19px;font-weight:800;color:var(--ink-900)}
.tier-head .tier-note{display:block;margin-top:6px;font-size:13px;font-weight:400;color:var(--ink-500);line-height:1.65}
.tier-head .tier-price{display:block;margin-top:12px;font-size:13px;font-weight:600;color:var(--brand-600)}
th.recommend{background:rgba(255,241,236,.6);transform:translateY(-4px);border-top:3px solid transparent;border-image:var(--grad) 1}
th.recommend .badge-rec{position:absolute;top:14px;right:22px;padding:4px 10px;border-radius:999px;background:var(--dark);color:var(--lime-400);font-size:11.5px;font-weight:600;letter-spacing:.02em}
.check{width:20px;height:20px;stroke:var(--lime-600);fill:none;stroke-width:2}
.dash{display:inline-block;width:14px;height:2px;border-radius:2px;background:var(--ink-300)}
.table-note{margin-top:16px;font-size:12.5px;color:var(--ink-500);line-height:1.7}
.table-note a{color:var(--brand-600);border-bottom:1px dashed var(--brand-500)}
.tier-stack{display:grid;gap:20px}
.tier-stack-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1)}
.tier-stack-card.is-rec{border-color:var(--brand-100);background:rgba(255,241,236,.5)}
.tier-stack-card h3{font-size:19px}
.tier-stack-card .tier-note{margin-top:6px;font-size:13.5px;color:var(--ink-500)}
.tier-benefits{margin-top:18px;display:grid;gap:12px}
.tier-benefits li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;line-height:1.7}
.tier-benefits svg{flex:none;margin-top:4px}
.tier-stack-card .btn{margin-top:20px}
@media(min-width:768px){
  .tier-stack{display:none}
  .table-wrap{display:block}
}

/* ---------- 等级亮点 ---------- */
.tier-cards{display:grid;grid-template-columns:1fr;gap:24px;align-items:stretch}
.tier-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px 28px;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);display:flex;flex-direction:column}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.tier-card.featured{border-color:transparent;background:
  linear-gradient(#fff,#fff) padding-box,
  var(--grad) border-box;
  border:1.5px solid transparent;
  box-shadow:var(--sh-2)}
.tier-card h3{margin-top:16px;font-size:21px}
.tier-card .tier-role{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.75}
.num-badge{display:inline-flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:var(--ink-900);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.num-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime-400);box-shadow:0 0 0 3px rgba(200,244,92,.28)}
.tier-feature-list{margin-top:22px;display:grid;gap:13px;flex:1}
.tier-feature-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-700)}
.tier-feature-list svg{flex:none;margin-top:5px;width:18px;height:18px;stroke:var(--brand-500);fill:none;stroke-width:1.6}
.tier-card .btn{margin-top:26px;align-self:flex-start}
@media(min-width:768px){.tier-cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){
  .tier-cards{grid-template-columns:repeat(3,1fr);gap:24px}
  .tier-card.featured{transform:scale(1.04)}
  .tier-card.featured:hover{transform:scale(1.04) translateY(-4px)}
}

/* ---------- 专属内容预览 ---------- */
.preview-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px}
.preview-grid{display:grid;grid-auto-flow:column;grid-auto-columns:82%;gap:16px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none}
.preview-grid::-webkit-scrollbar{height:0}
.preview-card{scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.preview-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.preview-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--dark)}
.preview-thumb img{width:100%;height:100%;object-fit:cover}
.preview-thumb.locked img{filter:grayscale(.4)}
.preview-mask{position:absolute;inset:0;background:rgba(18,21,26,.45);display:flex;align-items:center;justify-content:center}
.preview-mask svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.6}
.member-badge{position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;background:rgba(18,21,26,.78);color:var(--lime-400);font-size:11.5px;font-weight:600}
.member-badge svg{width:12px;height:12px;stroke:var(--lime-400);fill:none;stroke-width:1.8}
.preview-body{padding:18px 20px 22px}
.preview-body h3{font-size:16.5px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:49px}
.preview-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12.5px;color:var(--ink-500)}
.tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600;line-height:1.6}
@media(min-width:768px){.preview-grid{grid-template-columns:repeat(2,1fr);grid-auto-flow:row;grid-auto-columns:auto;overflow:visible}}
@media(min-width:1024px){.preview-grid{grid-template-columns:repeat(4,1fr)}}

/* ---------- 最新资讯 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px}
.news-lead{position:relative;display:block;border-radius:var(--r-lg);overflow:hidden;min-height:340px;background:var(--dark);box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.news-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-lead img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.news-lead::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(18,21,26,.72),rgba(242,84,45,.32))}
.news-lead-body{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;height:100%;min-height:340px;padding:28px}
.news-lead-body h3{margin-top:14px;font-size:clamp(20px,2.2vw,26px);line-height:1.4;color:#fff;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-lead-body p{margin-top:12px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.75);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;font-size:12.5px;color:rgba(255,255,255,.7)}
.news-meta .tag{background:rgba(255,255,255,.14);color:#fff}
.news-rows{display:grid;gap:12px;align-content:start}
.news-row{display:flex;gap:16px;align-items:center;padding:14px;border-radius:var(--r-md);background:var(--surface);border:1px solid var(--line);transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
.news-row:hover{background:rgba(255,241,236,.5);border-color:var(--brand-100);transform:translateX(3px)}
.row-thumb{flex:none;width:96px;height:64px;border-radius:var(--r-sm);overflow:hidden;background:var(--dark)}
.row-thumb img{width:100%;height:100%;object-fit:cover}
.row-body{min-width:0;flex:1}
.row-title{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.5}
.news-row:hover .row-title{color:var(--brand-600)}
.row-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:5px;font-size:13.5px;line-height:1.7;color:var(--ink-500)}
.row-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:8px;font-size:12px;color:var(--ink-300)}
.row-arrow{flex:none;width:20px;height:20px;stroke:var(--ink-300);fill:none;stroke-width:1.6;transition:transform .22s var(--ease),stroke .22s var(--ease)}
.news-row:hover .row-arrow{transform:translateX(3px);stroke:var(--brand-500)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:56px 24px;border:1.5px dashed var(--line);border-radius:var(--r-lg);text-align:center;background:var(--surface);min-height:320px}
.empty-state svg{width:32px;height:32px;stroke:var(--ink-300);fill:none;stroke-width:1.6}
.empty-state p{font-size:14.5px;color:var(--ink-500)}
@media(min-width:1024px){
  .news-grid{grid-template-columns:5fr 7fr;gap:28px}
  .news-lead,.news-lead-body{min-height:100%}
}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item:hover{border-color:var(--brand-100)}
.faq-item[open]{border-color:var(--brand-100);box-shadow:var(--sh-1)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;font-size:16px;font-weight:700;color:var(--ink-900);min-height:60px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:none;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-500);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--dark);border-radius:var(--r-xl);padding:40px 24px;color:rgba(255,255,255,.72)}
.cta-band::before{content:"";position:absolute;inset:0;background:
  radial-gradient(420px 320px at 6% 4%,rgba(242,84,45,.22),transparent 70%),
  repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 22px);
  pointer-events:none}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.28}
.cta-copy p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:520px}
.trust{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.trust li{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.82)}
.trust svg{width:16px;height:16px;stroke:var(--lime-400);fill:none;stroke-width:1.8}
.cta-form{background:#fff;border-radius:var(--r-md);padding:26px 22px;box-shadow:var(--sh-2)}
.cta-form h3{font-size:18px}
.cta-form .form-sub{margin-top:6px;font-size:13.5px;color:var(--ink-500);line-height:1.7}
.field{margin-top:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.field input{width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;color:var(--ink-900);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field input::placeholder{color:var(--ink-300)}
.field input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px rgba(242,84,45,.22)}
.form-note{margin-top:14px;font-size:12.5px;color:var(--ink-500);line-height:1.7}
.form-note a{color:var(--brand-600);border-bottom:1px dashed var(--brand-500)}
.form-status{margin-top:12px;font-size:12.5px;color:var(--accent-500);min-height:20px}
@media(min-width:768px){.cta-band{padding:48px 40px}}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.15fr .85fr;gap:48px}}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--dark);color:rgba(255,255,255,.66);margin-top:72px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.footer-top{padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 24px}
.footer-brand{grid-column:1 / -1}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:420px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-sm);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);transition:background .2s var(--ease),border-color .2s var(--ease)}
.socials a:hover{background:rgba(200,244,92,.14);border-color:rgba(200,244,92,.4)}
.socials svg{width:18px;height:18px;stroke:rgba(255,255,255,.8);fill:none;stroke-width:1.6}
.footer-col h4{font-size:15px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--lime-400)}
.footer-contact{display:grid;gap:10px;font-size:14px;color:rgba(255,255,255,.66)}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px}
.footer-bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:rgba(255,255,255,.45)}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
@media(max-width:767px){.footer-brand{grid-column:1 / -1}}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:20px;bottom:20px;width:48px;height:48px;border-radius:50%;background:var(--grad);box-shadow:var(--sh-brand);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);z-index:60}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.8}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--ink-300);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:var(--ink-500)}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand-50:#FFF1EC;--brand-100:#FFE0D5;--brand-500:#F2542D;--brand-600:#D93F1B;--brand-700:#B32F12;
  --accent-500:#1FB6A6;--accent-50:#E6F7F5;
  --lime-400:#C8F45C;--lime-600:#8FBE1F;
  --ink-900:#12151A;--ink-700:#2B313B;--ink-500:#5B6472;--ink-300:#9AA3B0;
  --line:#E6E2DB;--bg:#F7F5F1;--surface:#FFFFFF;--dark:#14171C;
  --grad:linear-gradient(135deg,#F2542D 0%,#FF8A3D 55%,#C8F45C 100%);
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:24px;--r-xl:32px;
  --sh-1:0 1px 2px rgba(18,21,26,.04),0 8px 24px -12px rgba(18,21,26,.10);
  --sh-2:0 18px 40px -20px rgba(18,21,26,.22);
  --sh-brand:0 12px 30px -14px rgba(242,84,45,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-900);
  font-family:var(--font-cn);font-size:16px;line-height:1.9;
  font-weight:400;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime-600);outline-offset:2px;border-radius:6px
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{padding:0 40px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease),background .24s var(--ease)
}
.site-header.scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:68px;transition:min-height .24s var(--ease)}
.site-header.scrolled .nav-inner{min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:grid;place-items:center;color:#fff;flex:0 0 auto
}
.brand-mark svg{width:20px;height:20px;stroke-width:1.8}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900)}
.brand:hover .brand-text{color:var(--brand-600)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;font-size:16px;font-weight:600;
  color:var(--ink-700);border-radius:var(--r-xs)
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--grad);border-radius:2px;transition:left .22s var(--ease),right .22s var(--ease)
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{left:14px;right:14px}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;font-size:16px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 34px -14px rgba(242,84,45,.55)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px}
.btn-outline{background:transparent;border-color:rgba(18,21,26,.14);color:var(--ink-900)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn[disabled],.btn.disabled{opacity:.4;pointer-events:none}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px
}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ breadcrumb + hero ============ */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(135deg,rgba(18,21,26,.82),rgba(242,84,45,.40)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 2px,transparent 2px 14px);
  opacity:.5
}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:52px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:12.5px;color:rgba(255,255,255,.72);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--lime-400)}
.breadcrumb .sep{opacity:.6}
.breadcrumb [aria-current]{color:#fff}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:800;color:#fff;max-width:820px
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);max-width:720px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 18px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  color:#fff;font-size:14px;font-weight:600;transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)
}
.chip:hover{background:rgba(200,244,92,.18);border-color:rgba(200,244,92,.5);transform:translateY(-1px)}
.chip svg{width:16px;height:16px}

/* ============ sections ============ */
.section{padding:72px 0}
@media(min-width:1024px){.section{padding:104px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-600);background:var(--brand-50);border-radius:999px;padding:6px 14px;margin-bottom:16px
}
.section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.26;font-weight:700}
.section-title::before{
  content:"";display:block;width:48px;height:4px;border-radius:2px;background:var(--grad);margin-bottom:16px
}
.section-desc{margin-top:16px;font-size:16px;color:var(--ink-500);line-height:1.9}

/* ============ feature rows ============ */
.feature-rows{display:flex;flex-direction:column;gap:56px}
@media(min-width:1024px){.feature-rows{gap:72px}}
.feature-row{
  display:grid;gap:24px;align-items:center;scroll-margin-top:110px
}
@media(min-width:900px){
  .feature-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px}
  .feature-row.reverse .feature-media{order:2}
}
.feature-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(135deg,var(--brand-500),var(--lime-400));box-shadow:var(--sh-1)
}
.feature-media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .4s var(--ease)}
.feature-row:hover .feature-media img{transform:scale(1.02)}
.feature-index{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num);
  font-size:20px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums
}
.feature-index::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime-400)}
.feature-title{margin-top:10px;font-size:20px;font-weight:700;line-height:1.4}
.feature-text{margin-top:14px;font-size:16px;line-height:1.9;color:var(--ink-500)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600
}
.tag.neutral{background:#F1EFEA;color:var(--ink-500)}
.link-ghost{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:15px;font-weight:600;color:var(--brand-600)
}
.link-ghost svg{width:18px;height:18px;transition:transform .22s var(--ease)}
.link-ghost:hover svg{transform:translateX(4px)}

/* ============ stat strip ============ */
.stat-strip{
  margin-top:64px;display:grid;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-1)
}
@media(min-width:768px){.stat-strip{grid-template-columns:repeat(3,1fr);gap:24px;padding:40px 32px}}
.stat-item{text-align:left;padding:8px 0}
@media(min-width:768px){.stat-item+.stat-item{border-left:1px solid var(--line);padding-left:28px}}
.stat-num{
  font-family:var(--font-num);font-size:clamp(28px,3vw,42px);line-height:1;font-weight:800;
  font-variant-numeric:tabular-nums;color:var(--ink-900)
}
.stat-num em{font-style:normal;font-size:.5em;font-weight:700;color:var(--brand-600);margin-left:4px}
.stat-label{margin-top:10px;font-size:14px;color:var(--ink-500);line-height:1.7}

/* ============ faq ============ */
.faq-wrap{max-width:880px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease)
}
.faq-item:hover{border-color:var(--brand-100);box-shadow:var(--sh-1)}
.faq-item[open]{border-color:var(--brand-100)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:700;color:var(--ink-900)
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand-600);transition:transform .2s var(--ease),border-color .2s var(--ease)
}
.faq-icon svg{width:14px;height:14px}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--brand-500)}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ============ cta ============ */
.cta-block{
  position:relative;overflow:hidden;background:var(--dark);border-radius:var(--r-xl);
  padding:40px 24px;color:#fff
}
@media(min-width:1024px){.cta-block{padding:56px 48px}}
.cta-block::before{
  content:"";position:absolute;top:-120px;left:-80px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(242,84,45,.35),transparent 65%);pointer-events:none
}
.cta-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 2px,transparent 2px 16px)
}
.cta-inner{position:relative;z-index:2;display:grid;gap:32px}
@media(min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) minmax(0,420px);align-items:center;gap:48px}}
.cta-title{font-size:clamp(24px,2.6vw,34px);line-height:1.26;font-weight:700;color:#fff}
.cta-text{margin-top:16px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.76)}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.trust-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  font-size:12.5px;font-weight:600;color:rgba(255,255,255,.9)
}
.trust-badge i{width:6px;height:6px;border-radius:50%;background:var(--lime-400);display:block}
.join-card{background:#fff;border-radius:var(--r-md);padding:28px 24px;box-shadow:var(--sh-2);color:var(--ink-900)}
.join-card h3{font-size:18px;font-weight:700;line-height:1.5}
.join-card p{margin-top:8px;font-size:13.5px;color:var(--ink-500);line-height:1.75}
.join-form{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.join-form input{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
  padding:0 16px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.join-form input::placeholder{color:var(--ink-300)}
.join-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px rgba(242,84,45,.25)}
.join-form .btn{width:100%}
.form-note{margin-top:12px;font-size:12.5px;color:var(--ink-300);line-height:1.7}
.form-status{margin-top:12px;font-size:13px;font-weight:600;color:var(--accent-500);display:none}
.form-status.show{display:block}

/* ============ footer ============ */
.site-footer{position:relative;margin-top:72px;background:var(--dark);color:rgba(255,255,255,.8)}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.footer-top{padding:56px 0 40px}
@media(min-width:1024px){.footer-top{padding:64px 0 48px}}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px 40px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.site-footer .brand-text{color:#fff}
.site-footer .brand:hover .brand-text{color:var(--lime-400)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:360px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{
  width:40px;height:40px;border-radius:var(--r-sm);display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.8)
}
.socials a:hover{color:var(--lime-400);border-color:rgba(200,244,92,.5);background:rgba(255,255,255,.05)}
.socials svg{width:18px;height:18px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:var(--lime-400)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:20px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.55)}

/* ============ responsive nav ============ */
@media(max-width:900px){
  .burger{display:flex}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;
    gap:4px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    padding:12px 20px 20px;margin:0
  }
  .nav-menu.open{display:flex}
  .nav-link{padding:14px 16px;font-size:16px}
  .nav-link::after{display:none}
  .nav-link.active{background:var(--brand-50);border-radius:var(--r-sm)}
  .nav-actions .btn-sm{display:none}
}
@media(max-width:520px){
  .hero-sub{font-size:15.5px}
  .stat-strip{padding:24px}
  .faq-item summary{font-size:15px;padding:18px}
  .cta-block{border-radius:var(--r-lg)}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand-50:#FFF1EC;--brand-100:#FFE0D5;--brand-500:#F2542D;--brand-600:#D93F1B;--brand-700:#B32F12;
  --accent-50:#E6F7F5;--accent-500:#1FB6A6;--accent-600:#178F83;
  --lime-400:#C8F45C;--lime-600:#8FBE1F;
  --ink-900:#12151A;--ink-700:#2B313B;--ink-500:#5B6472;--ink-300:#9AA3B0;
  --line:#E6E2DB;--bg:#F7F5F1;--surface:#FFFFFF;--dark:#14171C;
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:24px;--r-xl:32px;--pill:999px;
  --sh-1:0 1px 2px rgba(18,21,26,.04),0 8px 24px -12px rgba(18,21,26,.10);
  --sh-2:0 18px 40px -20px rgba(18,21,26,.22);
  --sh-brand:0 12px 30px -14px rgba(242,84,45,.45);
  --grad:linear-gradient(135deg,#F2542D 0%,#FF8A3D 55%,#C8F45C 100%);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--lime-600);outline-offset:2px}
::selection{background:var(--brand-100);color:var(--brand-700)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--ink-300);border-radius:var(--pill)}
::-webkit-scrollbar-thumb:hover{background:var(--ink-500)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{padding:0 40px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:rgba(255,255,255,.8);font-size:12.5px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.dot{width:6px;height:6px;border-radius:50%;background:var(--lime-400);flex:none}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-domain{color:rgba(255,255,255,.5);letter-spacing:.02em}
.topbar-right{display:flex;align-items:center;gap:16px;flex:none}
.topbar-right a{color:rgba(255,255,255,.8);transition:color .2s var(--ease)}
.topbar-right a:hover{color:#fff}
.topbar-cta{color:var(--lime-400)!important}
.topbar-cta:hover{text-decoration:underline}
@media(max-width:767px){
  .topbar{font-size:12px}
  .topbar-note,.topbar-domain{display:none}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.98)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:grid;place-items:center;color:#fff;box-shadow:var(--sh-brand);flex:none;
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900)}
.nav-menu{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:16px;font-weight:600;color:var(--ink-700);transition:color .22s var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--grad);transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{left:0;right:0}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{left:0;right:0}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:0;border-radius:var(--pill);cursor:pointer;
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 34px -14px rgba(242,84,45,.55)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-outline{background:transparent;border:1.5px solid rgba(18,21,26,.14);color:var(--ink-900)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.btn-ghost{height:auto;padding:4px 0;border-radius:0;background:none;color:var(--brand-600);font-weight:600}
.btn-ghost svg{transition:transform .22s var(--ease)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px}
.btn-lg{height:54px;padding:0 32px;font-size:16.5px}
.btn-block{width:100%}

.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);margin:3px auto;transition:transform .2s var(--ease)}
.burger:hover{border-color:var(--brand-500)}
.burger:hover span{background:var(--brand-600)}
@media(max-width:1023px){
  .nav-menu{display:none}
  .burger{display:grid}
}
@media(max-width:640px){
  .nav-actions .btn-primary{display:none}
  .brand-text{font-size:16.5px}
}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;display:flex;flex-direction:column;
  padding:16px 20px calc(20px + env(safe-area-inset-bottom));
  transform:translateY(-12px);opacity:0;transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.drawer.is-open{transform:translateY(0);opacity:1}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 0 18px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;display:grid;place-items:center;cursor:pointer}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:var(--ink-900);stroke-width:1.7;stroke-linecap:round}
.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:20px 0;flex:1}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  min-height:56px;padding:0 16px;border-radius:var(--r-md);background:var(--bg);
  font-size:15.5px;font-weight:600;color:var(--ink-900);border:1px solid transparent;
}
.drawer-nav a:hover{border-color:var(--brand-100);color:var(--brand-600)}
.drawer-nav a svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 文章页 ---------- */
.page-main{padding:28px 0 72px}
@media(min-width:1024px){.page-main{padding:36px 0 104px}}

.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--ink-500);margin-bottom:22px}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600)}
.crumb-sep{display:inline-block;width:8px;height:8px;border-top:1.5px solid var(--ink-300);border-right:1.5px solid var(--ink-300);transform:rotate(45deg)}
.crumb-current{color:var(--ink-900);font-weight:600;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{max-width:820px;margin:0 auto 28px}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--pill);
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600;line-height:1;
}
.article-title{
  font-size:clamp(26px,3.4vw,38px);line-height:1.28;font-weight:800;letter-spacing:-.01em;
  margin:14px 0 0;color:var(--ink-900);
}
.title-rule{width:64px;height:4px;border-radius:var(--pill);background:var(--grad);margin:18px 0 16px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--ink-500)}
.article-meta .m-dot{width:4px;height:4px;border-radius:50%;background:var(--ink-300)}
.article-meta strong{color:var(--ink-700);font-weight:600}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
@media(min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,800px) 240px;gap:48px;justify-content:center}
}
.article-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px 20px;
}
@media(min-width:768px){.article-panel{padding:34px 36px}}
@media(min-width:1280px){.article-panel{padding:40px 44px}}

.entry-content{max-width:800px;overflow-wrap:anywhere}
.entry-content>*:first-child{margin-top:0}
.entry-content p{font-size:17px;line-height:1.95;color:var(--ink-700);margin:0 0 1.15em}
.entry-content h2{
  position:relative;font-size:clamp(21px,2.2vw,27px);font-weight:700;line-height:1.35;
  color:var(--ink-900);margin:40px 0 12px;padding-left:16px;
}
.entry-content h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:4px;background:var(--grad)}
.entry-content h3{font-size:19px;font-weight:700;line-height:1.45;color:var(--ink-900);margin:28px 0 10px}
.entry-content h4{font-size:17px;font-weight:700;margin:22px 0 8px}
.entry-content ul,.entry-content ol{padding-left:22px;margin:0 0 1.2em}
.entry-content li{font-size:16.5px;line-height:1.85;color:var(--ink-700);margin-bottom:.5em}
.entry-content ul{list-style:square}
.entry-content ul li::marker{color:var(--lime-600)}
.entry-content ol{list-style:decimal}
.entry-content ol li::marker{color:var(--brand-500);font-weight:700}
.entry-content blockquote{
  margin:24px 0;padding:16px 20px;border-left:4px solid var(--brand-500);
  background:rgba(255,241,236,.7);border-radius:var(--r-sm);color:var(--ink-700);font-size:16px;
}
.entry-content img{border-radius:var(--r-md);margin:24px auto}
.entry-content figure{margin:24px 0}
.entry-content figcaption{text-align:center;font-size:13px;color:var(--ink-500);margin-top:10px}
.entry-content a{color:var(--brand-600);border-bottom:1px dashed var(--brand-500)}
.entry-content a:hover{color:var(--brand-700)}
.entry-content table{width:100%;min-width:520px;border-collapse:collapse;font-size:15px}
.entry-content th,.entry-content td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.entry-content thead th{background:var(--bg);font-weight:700;color:var(--ink-900)}
.entry-content blockquote p:last-child{margin-bottom:0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:300px;padding:48px 20px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--bg);
}
.empty-state svg{width:40px;height:40px;fill:none;stroke:var(--ink-300);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-title{font-size:20px;font-weight:700;color:var(--ink-900)}
.empty-state p{font-size:14.5px;color:var(--ink-500);max-width:420px}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.tag-row .tag-pill{background:var(--bg);color:var(--ink-700);height:28px}
.tag-row .tag-pill:hover{background:var(--brand-50);color:var(--brand-600)}

/* 侧栏 */
.article-aside{display:flex;flex-direction:column;gap:16px}
@media(max-width:1279px){.article-aside{flex-direction:row;flex-wrap:wrap}}
@media(max-width:767px){.article-aside{flex-direction:column}}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:20px;
}
@media(min-width:1280px){.aside-card{position:sticky;top:96px}}
@media(max-width:1279px){.aside-card{flex:1 1 260px}}
.aside-card h3{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.aside-card h3 span{width:6px;height:6px;border-radius:50%;background:var(--lime-600);flex:none}
.aside-card p{font-size:13.5px;line-height:1.8;color:var(--ink-500)}
.aside-links{display:flex;flex-direction:column;gap:2px;margin-top:6px}
.aside-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  min-height:44px;padding:0 10px;border-radius:var(--r-xs);font-size:14px;font-weight:600;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.aside-links a:hover{background:var(--brand-50);color:var(--brand-600)}
.aside-links svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* 通用板块 */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:72px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-head p{font-size:14.5px;color:var(--ink-500);margin-top:8px}

.read-next{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.read-next{grid-template-columns:1fr 1fr}}
.next-card{
  display:flex;align-items:center;gap:16px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  padding:20px 24px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.next-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.next-card .nc-arrow{
  width:44px;height:44px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-600);
}
.next-card .nc-arrow svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.next-card h3{font-size:16.5px;font-weight:700;line-height:1.45;color:var(--ink-900)}
.next-card span{display:block;font-size:12.5px;color:var(--ink-500);margin-top:4px}

.rec-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.rec-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.rec-grid{grid-template-columns:repeat(3,1fr)}}
.rec-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.rec-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg)}
.rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rec-card:hover .rec-media img{transform:scale(1.04)}
.rec-body{padding:20px;display:flex;flex-direction:column;gap:10px}
.rec-body h3{font-size:16.5px;font-weight:700;line-height:1.5;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-500)}

/* 深色 CTA */
.cta-wrap{
  position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--dark);color:#fff;
  padding:36px 24px;
}
@media(min-width:768px){.cta-wrap{padding:48px}}
.cta-wrap::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(420px 320px at 8% 8%,rgba(242,84,45,.30),transparent 70%),
    repeating-linear-gradient(135deg,rgba(255,255,255,.045) 0 2px,transparent 2px 14px);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);line-height:1.32;font-weight:700;letter-spacing:-.01em}
.cta-inner p.lead{font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.72);margin-top:12px;max-width:520px}
.trust-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.trust-list span{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:var(--pill);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  font-size:12.5px;font-weight:600;color:rgba(255,255,255,.88);
}
.trust-list svg{width:14px;height:14px;fill:none;stroke:var(--lime-400);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.cta-form{
  background:#fff;color:var(--ink-900);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-2);
}
.cta-form h3{font-size:17px;font-weight:700;margin-bottom:6px}
.cta-form p{font-size:13px;color:var(--ink-500);line-height:1.7;margin-bottom:16px}
.form-row{display:flex;flex-direction:column;gap:12px}
.form-input{
  width:100%;height:48px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:15px;color:var(--ink-900);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-input::placeholder{color:var(--ink-300)}
.form-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px rgba(242,84,45,.18)}
.form-note{font-size:12.5px;line-height:1.7;margin-top:12px;color:var(--ink-500)}
.form-note.is-ok{color:var(--accent-600);font-weight:600}
.form-note.is-error{color:var(--brand-700);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:56px;background:var(--dark);color:rgba(255,255,255,.74);border-top:3px solid transparent;border-image:var(--grad) 1}
.footer-top{padding:48px 0 32px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand .brand{margin-bottom:14px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:40px;height:40px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.socials a:hover{background:rgba(200,244,92,.12);border-color:rgba(200,244,92,.4)}
.socials svg{width:18px;height:18px;fill:none;stroke:rgba(255,255,255,.8);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:14.5px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{
  display:inline-flex;align-items:center;min-height:36px;font-size:14px;color:rgba(255,255,255,.7);
  transition:color .2s var(--ease);
}
.footer-links a:hover{color:var(--lime-400)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.62)}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:18px 0;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}

.to-top{
  position:fixed;right:20px;bottom:20px;z-index:60;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);display:grid;place-items:center;
  box-shadow:var(--sh-1);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),box-shadow .24s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:var(--sh-2);color:var(--brand-600);border-color:var(--brand-100)}
.to-top svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand-50:#FFF1EC; --brand-100:#FFE0D5; --brand-500:#F2542D; --brand-600:#D93F1B; --brand-700:#B32F12;
  --accent-500:#1FB6A6; --accent-50:#E6F7F5;
  --lime-400:#C8F45C; --lime-600:#8FBE1F;
  --ink-900:#12151A; --ink-700:#2B313B; --ink-500:#5B6472; --ink-300:#9AA3B0;
  --line:#E6E2DB; --bg:#F7F5F1; --surface:#FFFFFF; --dark:#14171C;
  --grad:linear-gradient(135deg,#F2542D 0%,#FF8A3D 55%,#C8F45C 100%);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:24px; --r-xl:32px; --pill:999px;
  --sh-1:0 1px 2px rgba(18,21,26,.04), 0 8px 24px -12px rgba(18,21,26,.10);
  --sh-2:0 18px 40px -20px rgba(18,21,26,.22);
  --sh-brand:0 12px 30px -14px rgba(242,84,45,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:72px;
}
@media (min-width:1024px){ :root{ --sec:104px; } }
@media (min-width:1280px){ :root{ --sec:120px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; background:var(--bg); color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px; line-height:1.9; font-weight:400;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{ margin:0; }
ul,ol{ padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; transition:color .2s var(--ease); }
img{ display:block; max-width:100%; height:auto; }
button,input,select,textarea{ font:inherit; color:inherit; }
button{ background:none; border:0; cursor:pointer; }
:focus-visible{ outline:2px solid var(--lime-600); outline-offset:2px; border-radius:4px; }
::selection{ background:var(--brand-100); }
::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-track{ background:var(--bg); }
::-webkit-scrollbar-thumb{ background:var(--ink-300); border-radius:999px; }
::-webkit-scrollbar-thumb:hover{ background:var(--ink-500); }

.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 20px; }
@media (min-width:768px){ .container{ padding:0 32px; } }
@media (min-width:1280px){ .container{ padding:0 40px; } }
.wide{ max-width:1280px; }

/* ---------- 顶部信息条 ---------- */
.topbar{ background:var(--dark); color:rgba(255,255,255,.8); font-size:12.5px; line-height:1.6; }
.topbar-inner{ display:flex; align-items:center; justify-content:space-between; gap:16px; min-height:36px; }
.topbar-left{ display:flex; align-items:center; gap:10px; min-width:0; }
.dot{ width:6px; height:6px; border-radius:50%; background:var(--lime-400); flex:none; }
.topbar-left span{ white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.topbar-left .domain{ color:rgba(255,255,255,.55); }
.topbar-right{ display:flex; align-items:center; gap:18px; flex:none; }
.topbar-right a:hover{ color:#fff; }
.topbar-right .lime{ color:var(--lime-400); }
@media (max-width:767px){
  .topbar{ font-size:11.5px; }
  .topbar-left{ display:none; }
  .topbar-inner{ justify-content:flex-end; }
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky; top:0; z-index:50; background:rgba(247,245,241,.98);
  border-bottom:1px solid var(--line); transition:box-shadow .24s var(--ease);
}
.site-header.scrolled{ box-shadow:var(--sh-1); background:rgba(255,255,255,.98); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; min-height:68px; transition:min-height .24s var(--ease); }
.site-header.scrolled .nav-inner{ min-height:60px; }
.brand{ display:inline-flex; align-items:center; gap:10px; }
.brand-mark{
  width:32px; height:32px; border-radius:var(--r-sm); background:var(--grad);
  display:inline-flex; align-items:center; justify-content:center; flex:none;
  box-shadow:var(--sh-brand);
}
.brand-mark svg{ width:20px; height:20px; fill:none; stroke:#fff; stroke-width:1.6; }
.brand-text{ font-size:18px; font-weight:800; letter-spacing:-.01em; white-space:nowrap; }
.nav-menu{ display:none; align-items:center; gap:26px; }
.nav-link{ position:relative; font-size:16px; font-weight:600; color:var(--ink-700); padding:6px 2px; }
.nav-link::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px; border-radius:2px;
  background:var(--grad); transform:scaleX(0); transform-origin:center; transition:transform .22s var(--ease);
}
.nav-link:hover{ color:var(--brand-600); }
.nav-link:hover::after{ transform:scaleX(1); }
.nav-link.active{ color:var(--brand-600); }
.nav-link.active::after{ transform:scaleX(1); }
.nav-actions{ display:flex; align-items:center; gap:12px; }
.burger{ width:44px; height:44px; display:inline-flex; flex-direction:column; align-items:center; justify-content:center; gap:5px; border-radius:var(--r-xs); }
.burger span{ width:20px; height:2px; background:var(--ink-900); border-radius:2px; transition:transform .22s var(--ease), opacity .22s var(--ease); }
.burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.burger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
@media (min-width:1024px){
  .nav-menu{ display:flex; }
  .burger{ display:none; }
}
@media (max-width:1023px){
  .nav-actions .btn-primary{ display:none; }
}

/* 移动抽屉 */
.drawer{
  position:fixed; inset:0; z-index:60; background:var(--surface);
  display:flex; flex-direction:column; padding:16px 20px calc(20px + env(safe-area-inset-bottom));
  transform:translateY(-12px); opacity:0; visibility:hidden; transition:transform .24s var(--ease), opacity .24s var(--ease), visibility .24s;
}
.drawer.open{ transform:translateY(0); opacity:1; visibility:visible; }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; padding-bottom:16px; border-bottom:1px solid var(--line); }
.drawer-close{ width:44px; height:44px; font-size:24px; line-height:1; color:var(--ink-500); border-radius:var(--r-xs); }
.drawer-close:hover{ color:var(--brand-600); background:var(--brand-50); }
.drawer-nav{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px; padding:20px 0; overflow-y:auto; flex:1; }
.drawer-link{
  display:flex; align-items:center; justify-content:space-between; gap:8px;
  min-height:64px; padding:0 16px; border-radius:var(--r-md); background:var(--bg);
  border:1px solid var(--line); font-weight:600; font-size:15px;
}
.drawer-link:hover{ border-color:var(--brand-100); color:var(--brand-600); background:var(--brand-50); }
.drawer-link svg{ width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:1.6; flex:none; }
.drawer-foot{ padding-top:16px; border-top:1px solid var(--line); }

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 26px; border-radius:var(--pill);
  font-size:16px; font-weight:600; letter-spacing:-.01em; white-space:nowrap;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn svg{ width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:1.6; }
.btn-primary{ background:var(--grad); color:#fff; box-shadow:0 8px 20px -12px rgba(242,84,45,.55); }
.btn-primary:hover{ transform:translateY(-1px); box-shadow:var(--sh-brand); }
.btn-primary:active{ transform:translateY(0); filter:brightness(.94); }
.btn-ghost{ background:transparent; border:1.5px solid rgba(18,21,26,.14); color:var(--ink-900); }
.btn-ghost:hover{ border-color:var(--brand-500); color:var(--brand-600); background:var(--brand-50); }
.btn-sm{ height:40px; padding:0 20px; font-size:15px; }
.btn-lg{ height:54px; padding:0 32px; }
.btn-block{ width:100%; }
.btn[disabled]{ opacity:.4; pointer-events:none; }
.link-more{ display:inline-flex; align-items:center; gap:6px; font-weight:600; font-size:15px; color:var(--brand-600); }
.link-more svg{ width:16px; height:16px; fill:none; stroke:currentColor; stroke-width:1.8; transition:transform .2s var(--ease); }
.link-more:hover svg{ transform:translateX(4px); }

.tag{
  display:inline-flex; align-items:center; height:26px; padding:0 10px; border-radius:var(--pill);
  background:var(--brand-50); color:var(--brand-600); font-size:12px; font-weight:600;
}
.tag-soft{ background:var(--bg); color:var(--ink-500); border:1px solid var(--line); }
.badge-dark{
  display:inline-flex; align-items:center; gap:6px; height:28px; padding:0 12px; border-radius:var(--pill);
  background:var(--dark); color:var(--lime-400); font-size:12px; font-weight:600; font-variant-numeric:tabular-nums;
}
.badge-dark i{ width:6px; height:6px; border-radius:50%; background:var(--lime-400); display:block; }
.badge-line{
  display:inline-flex; align-items:center; height:30px; padding:0 14px; border-radius:var(--pill);
  background:var(--surface); border:1px solid var(--line); font-size:13px; font-weight:600; color:var(--ink-700);
}
.badge-line.callout{ background:var(--accent-50); border-color:rgba(31,182,166,.28); color:#0F7A6E; }

/* ---------- 页头 ---------- */
.page-head{ position:relative; overflow:hidden; background:var(--bg); border-bottom:1px solid var(--line); }
.page-head::before{
  content:""; position:absolute; width:520px; height:520px; left:-160px; top:-220px; border-radius:50%;
  background:radial-gradient(circle, rgba(242,84,45,.14), transparent 68%);
}
.page-head::after{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.5;
  background:repeating-linear-gradient(45deg, rgba(18,21,26,.035) 0 2px, transparent 2px 14px);
}
.page-head .container{ position:relative; z-index:1; }
.crumbs{ display:flex; align-items:center; gap:10px; font-size:12.5px; color:var(--ink-500); padding:24px 0 0; }
.crumbs a:hover{ color:var(--brand-600); }
.crumbs .sep{ color:var(--ink-300); }
.crumbs .now{ color:var(--ink-900); }
.head-grid{ display:grid; gap:36px; padding:22px 0 var(--sec); }
.head-copy h1{ font-size:clamp(28px,4.2vw,46px); line-height:1.18; font-weight:800; letter-spacing:-.01em; }
.head-copy .lead{ margin-top:18px; font-size:17px; line-height:1.85; color:var(--ink-500); max-width:620px; }
.head-badges{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
.head-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
.head-media{ border-radius:var(--r-xl); overflow:hidden; border:1px solid var(--line); box-shadow:var(--sh-1); background:var(--surface); }
.head-media img{ width:100%; aspect-ratio:3/2; object-fit:cover; }
@media (min-width:1024px){
  .head-grid{ grid-template-columns:7fr 5fr; align-items:center; gap:48px; padding-bottom:calc(var(--sec) - 12px); }
}

/* ---------- 板块通式 ---------- */
.section{ padding:var(--sec) 0; }
.section-head{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:36px; }
.section-head h2{ font-size:clamp(24px,2.6vw,34px); line-height:1.26; font-weight:700; letter-spacing:-.01em; }
.section-head h2 .bar{ display:block; width:64px; height:4px; border-radius:2px; background:var(--grad); margin-bottom:14px; }
.section-head .sub{ margin-top:10px; font-size:15px; color:var(--ink-500); max-width:640px; }

/* ---------- 索引 + 宽卡列表 ---------- */
.benefit-layout{ display:grid; gap:32px; }
.index-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:20px; box-shadow:var(--sh-1);
}
.index-card h3{ font-size:15px; font-weight:700; color:var(--ink-500); margin-bottom:12px; letter-spacing:.02em; }
.index-list{ display:grid; gap:4px; }
.index-list a{
  display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:var(--r-sm);
  font-size:14.5px; font-weight:600; color:var(--ink-700); border-left:3px solid transparent;
}
.index-list a i{ width:6px; height:6px; border-radius:1px; background:var(--ink-300); flex:none; transition:background .2s var(--ease); }
.index-list a:hover{ background:var(--brand-50); color:var(--brand-600); }
.index-list a:hover i{ background:var(--brand-500); }
.index-list a.active{ color:var(--brand-600); background:var(--brand-50); border-left-color:var(--brand-500); }
.index-list a.active i{ background:var(--lime-600); }
.bcard-list{ display:grid; gap:24px; }
.bcard{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:26px 24px; box-shadow:var(--sh-1); display:flex; gap:18px;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.bcard:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); border-color:var(--brand-100); }
.bcard .no{
  flex:none; width:44px; height:44px; border-radius:var(--r-sm); background:var(--bg); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center; font-size:15px; font-weight:800; color:var(--brand-600);
  font-variant-numeric:tabular-nums;
}
.bcard-body{ flex:1; min-width:0; }
.bcard-body h3{ font-size:20px; line-height:1.4; font-weight:700; }
.bcard-body p{ margin-top:10px; font-size:15px; line-height:1.85; color:var(--ink-500); }
.tag-row{ display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.bcard .arrow{
  flex:none; align-self:center; width:36px; height:36px; border-radius:50%; border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center; color:var(--ink-500);
  transition:transform .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.bcard .arrow svg{ width:16px; height:16px; fill:none; stroke:currentColor; stroke-width:1.8; }
.bcard:hover .arrow{ background:var(--brand-500); border-color:var(--brand-500); color:#fff; transform:translateX(3px); }
@media (min-width:1024px){
  .benefit-layout{ grid-template-columns:260px 1fr; align-items:start; gap:40px; }
  .index-card{ position:sticky; top:96px; }
  .bcard{ padding:32px; }
}
@media (max-width:575px){
  .bcard{ flex-direction:column; }
  .bcard .arrow{ align-self:flex-start; }
}

/* ---------- 三档概览小卡 ---------- */
.tier-grid{ display:grid; gap:20px; }
.tier{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:28px 24px; box-shadow:var(--sh-1); display:flex; flex-direction:column;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.tier:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); border-color:var(--brand-100); }
.tier.mid{ border-color:rgba(242,84,45,.45); box-shadow:var(--sh-brand); }
.tier h3{ font-size:20px; font-weight:700; display:flex; align-items:center; gap:10px; }
.tier .pos{ margin-top:10px; font-size:14.5px; color:var(--ink-500); line-height:1.8; min-height:52px; }
.tier ul{ display:grid; gap:10px; margin:18px 0 22px; }
.tier li{ display:flex; gap:10px; font-size:14.5px; line-height:1.75; color:var(--ink-700); }
.tier li svg{ width:18px; height:18px; flex:none; margin-top:4px; fill:none; stroke:var(--lime-600); stroke-width:1.8; }
.tier .btn{ margin-top:auto; }
@media (min-width:768px){ .tier-grid{ grid-template-columns:repeat(3,1fr); } }

/* ---------- 流程 ---------- */
.flow{
  background:var(--dark); border-radius:var(--r-xl); padding:var(--sec) 0; color:#fff; position:relative; overflow:hidden;
}
.flow::before{
  content:""; position:absolute; width:520px; height:520px; right:-180px; top:-240px; border-radius:50%;
  background:radial-gradient(circle, rgba(242,84,45,.35), transparent 65%);
}
.flow::after{
  content:""; position:absolute; inset:0; opacity:.7; pointer-events:none;
  background:repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 16px);
}
.flow .container{ position:relative; z-index:1; }
.flow .section-head h2{ color:#fff; }
.flow .section-head .sub{ color:rgba(255,255,255,.65); }
.flow-grid{ display:grid; gap:18px; }
.step{
  border:1px solid rgba(255,255,255,.10); border-radius:var(--r-lg); padding:26px 24px;
  background:rgba(255,255,255,.03); transition:border-color .24s var(--ease), transform .24s var(--ease);
}
.step:hover{ transform:translateY(-4px); border-color:rgba(200,244,92,.45); }
.step .no{ font-size:13px; font-weight:700; color:var(--lime-400); letter-spacing:.08em; font-variant-numeric:tabular-nums; }
.step h3{ margin-top:12px; font-size:18px; font-weight:700; color:#fff; }
.step p{ margin-top:10px; font-size:14.5px; line-height:1.85; color:rgba(255,255,255,.68); }
@media (min-width:576px){ .flow-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .flow-grid{ grid-template-columns:repeat(4,1fr); } }

/* ---------- FAQ ---------- */
.faq{ max-width:880px; margin:0 auto; display:grid; gap:14px; }
.faq details{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-md);
  padding:4px 20px; transition:border-color .24s var(--ease), box-shadow .24s var(--ease);
}
.faq details:hover{ border-color:var(--brand-100); }
.faq details[open]{ border-color:var(--brand-100); box-shadow:var(--sh-1); }
.faq summary{
  list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 0; font-size:16px; font-weight:700; line-height:1.6;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary .plus{ position:relative; flex:none; width:22px; height:22px; }
.faq summary .plus::before,
.faq summary .plus::after{
  content:""; position:absolute; left:50%; top:50%; background:var(--brand-500); border-radius:2px;
  transform:translate(-50%,-50%); transition:transform .2s var(--ease), opacity .2s var(--ease);
}
.faq summary .plus::before{ width:14px; height:2px; }
.faq summary .plus::after{ width:2px; height:14px; }
.faq details[open] summary .plus::after{ transform:translate(-50%,-50%) rotate(90deg); opacity:0; }
.faq .ans{ padding:0 0 20px; font-size:15px; line-height:1.9; color:var(--ink-500); border-top:1px solid var(--line); padding-top:16px; }

/* ---------- CTA ---------- */
.cta{
  position:relative; border-radius:var(--r-xl); overflow:hidden; background:var(--dark); color:#fff;
}
.cta-bg{ position:absolute; inset:0; }
.cta-bg img{ width:100%; height:100%; object-fit:cover; }
.cta-bg::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(135deg, rgba(18,21,26,.92), rgba(242,84,45,.45));
}
.cta-inner{ position:relative; z-index:1; display:grid; gap:32px; padding:40px 24px; }
.cta-copy h2{ font-size:clamp(24px,2.6vw,34px); line-height:1.26; font-weight:700; }
.cta-copy p{ margin-top:16px; font-size:16px; line-height:1.85; color:rgba(255,255,255,.72); max-width:520px; }
.trust{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
.trust span{
  display:inline-flex; align-items:center; gap:8px; height:32px; padding:0 14px; border-radius:var(--pill);
  border:1px solid rgba(255,255,255,.18); font-size:13px; color:rgba(255,255,255,.85);
}
.trust i{ width:6px; height:6px; border-radius:50%; background:var(--lime-400); display:block; }
.form-card{ background:var(--surface); color:var(--ink-900); border-radius:var(--r-md); padding:26px 22px; box-shadow:var(--sh-2); }
.form-card h3{ font-size:18px; font-weight:700; }
.form-card .hint{ margin-top:8px; font-size:13.5px; color:var(--ink-500); line-height:1.7; }
.field{ margin-top:16px; }
.field label{ display:block; font-size:13.5px; font-weight:600; color:var(--ink-700); margin-bottom:8px; }
.field input,.field select{
  width:100%; height:48px; padding:0 16px; border-radius:var(--r-sm);
  border:1px solid var(--line); background:var(--surface); font-size:15px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field select{ appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%); background-position:calc(100% - 20px) 21px, calc(100% - 14px) 21px; background-size:6px 6px,6px 6px; background-repeat:no-repeat; }
.field input:focus,.field select:focus{ outline:none; border-color:var(--brand-500); box-shadow:0 0 0 2px rgba(242,84,45,.28); }
.field input.err{ border-color:var(--brand-700); }
.err-text{ margin-top:8px; font-size:12.5px; color:var(--brand-700); display:none; }
.err-text.show{ display:block; }
.form-card .btn{ margin-top:20px; }
.agree{ margin-top:12px; font-size:12.5px; color:var(--ink-500); line-height:1.7; }
.form-status{
  margin-top:14px; font-size:13.5px; line-height:1.7; padding:12px 14px; border-radius:var(--r-sm);
  background:var(--accent-50); color:#0F7A6E; border:1px solid rgba(31,182,166,.28); display:none;
}
.form-status.show{ display:block; }
@media (min-width:1024px){
  .cta-inner{ grid-template-columns:1fr 420px; align-items:center; padding:56px 48px; gap:48px; }
}

/* ---------- 页脚 ---------- */
.site-footer{ position:relative; background:var(--dark); color:rgba(255,255,255,.72); margin-top:var(--sec); }
.site-footer::before{ content:""; position:absolute; top:0; left:0; right:0; height:3px; background:var(--grad); }
.footer-top{ padding:56px 0 32px; }
.footer-grid{ display:grid; gap:32px; }
.site-footer .brand-text{ color:#fff; }
.footer-brand p{ margin-top:16px; font-size:14px; line-height:1.85; color:rgba(255,255,255,.62); max-width:340px; }
.socials{ display:flex; gap:10px; margin-top:18px; }
.socials a{
  width:40px; height:40px; border-radius:var(--r-sm); border:1px solid rgba(255,255,255,.14);
  display:flex; align-items:center; justify-content:center; color:rgba(255,255,255,.75);
  transition:border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.socials a svg{ width:20px; height:20px; fill:none; stroke:currentColor; stroke-width:1.6; }
.socials a:hover{ color:var(--lime-400); border-color:rgba(200,244,92,.5); background:rgba(255,255,255,.04); }
.footer-col h4{ font-size:15px; font-weight:700; color:#fff; margin-bottom:16px; }
.footer-links{ display:grid; gap:10px; }
.footer-links a{ font-size:14px; color:rgba(255,255,255,.66); }
.footer-links a:hover{ color:var(--lime-400); }
.footer-contact{ display:grid; gap:10px; font-size:14px; color:rgba(255,255,255,.66); }
.footer-contact strong{ color:rgba(255,255,255,.88); font-weight:600; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.10); padding:20px 0; }
.footer-bottom-inner{ display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px; font-size:12.5px; color:rgba(255,255,255,.5); }
@media (min-width:576px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; } .footer-top{ padding:64px 0 40px; } }

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed; right:24px; bottom:24px; width:48px; height:48px; border-radius:50%;
  background:var(--surface); border:1px solid var(--line); box-shadow:var(--sh-2); color:var(--ink-700);
  display:flex; align-items:center; justify-content:center; opacity:0; visibility:hidden; z-index:40;
  transition:opacity .24s var(--ease), visibility .24s, transform .24s var(--ease), color .2s var(--ease);
}
.to-top.show{ opacity:1; visibility:visible; }
.to-top:hover{ color:var(--brand-600); transform:translateY(-2px); }
.to-top svg{ width:20px; height:20px; fill:none; stroke:currentColor; stroke-width:1.8; }

@media (prefers-reduced-motion: reduce){
  *{ transition-duration:.001ms !important; animation-duration:.001ms !important; }
  html{ scroll-behavior:auto; }
}

/* roulang page: category3 */
:root{
  --brand-50:#FFF1EC;--brand-100:#FFE0D5;--brand-500:#F2542D;--brand-600:#D93F1B;--brand-700:#B32F12;
  --accent-500:#1FB6A6;--accent-50:#E6F7F5;
  --lime-400:#C8F45C;--lime-600:#8FBE1F;
  --ink-900:#12151A;--ink-700:#2B313B;--ink-500:#5B6472;--ink-300:#9AA3B0;
  --line:#E6E2DB;--bg:#F7F5F1;--surface:#FFFFFF;--dark:#14171C;
  --grad:linear-gradient(135deg,#F2542D 0%,#FF8A3D 52%,#C8F45C 100%);
  --grad-line:linear-gradient(90deg,#F2542D,#FF8A3D,#C8F45C);
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:24px;--r-xl:32px;
  --sh-1:0 1px 2px rgba(18,21,26,.04),0 8px 24px -12px rgba(18,21,26,.10);
  --sh-2:0 18px 40px -20px rgba(18,21,26,.22);
  --sh-brand:0 12px 30px -14px rgba(242,84,45,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em}
p{margin:0}
button,input{font:inherit;color:inherit}
svg{display:block}
::selection{background:var(--brand-100);color:var(--brand-700)}
:focus-visible{outline:2px solid var(--lime-600);outline-offset:2px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--ink-300);border-radius:999px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:var(--ink-500)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:56px 0}
.section-soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.26;font-weight:700}
.section-head h2::before{content:"";display:block;width:44px;height:4px;border-radius:4px;background:var(--grad-line);margin-bottom:14px}
.section-head p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-500)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand-600);text-transform:uppercase}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;transition:height .24s var(--ease)}
.site-header.scrolled .nav-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--grad);
  display:grid;place-items:center;box-shadow:var(--sh-brand);flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:16px;font-weight:600;color:var(--ink-700);border-radius:999px;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad-line);transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{left:14px;right:14px}
.nav-link::before{content:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.burger span{width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:.24s var(--ease)}
.burger:hover{border-color:var(--brand-100);background:var(--brand-50)}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border:0;border-radius:999px;font-size:16px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),
             border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-brand)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink-900);border:1.5px solid rgba(18,21,26,.14)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-50);color:var(--brand-600);
}
.badge-accent{background:var(--accent-50);color:#158578}
.badge-dark{background:var(--dark);color:var(--lime-400)}
.badge-dark::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime-400)}
.arrow-icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease)}

/* ---------- page head ---------- */
.page-head{position:relative;overflow:hidden;padding:44px 0 48px;background:var(--bg)}
.page-head::before{
  content:"";position:absolute;top:-180px;left:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,84,45,.16),rgba(242,84,45,0) 68%);pointer-events:none;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(45deg,#12151A 0 2px,transparent 2px 12px);
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-500);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{transition:color .22s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}
.page-head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:end}
.page-head h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.2;font-weight:800;margin:14px 0 14px;
}
.page-head p{font-size:16px;line-height:1.9;color:var(--ink-500);max-width:620px}
.search{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:10px;box-shadow:var(--sh-1)}
.search input{
  flex:1;min-width:0;height:48px;border:0;background:transparent;padding:0 14px;font-size:15px;
  border-radius:var(--r-sm);color:var(--ink-900);
}
.search input::placeholder{color:var(--ink-300)}
.search input:focus{outline:none;box-shadow:inset 0 0 0 2px var(--brand-500)}
.search-hint{margin-top:12px;font-size:12.5px;color:var(--ink-300)}

/* ---------- topic grid ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.topic-card:hover .arrow-icon{transform:translateX(4px)}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.topic-card h3{font-size:20px;line-height:1.4;font-weight:700;margin-bottom:10px}
.topic-card p{font-size:15px;line-height:1.85;color:var(--ink-500)}
.topic-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);color:var(--ink-300)}
.empty-state{
  margin-top:24px;border:1px dashed var(--line);border-radius:var(--r-lg);background:#fff;
  padding:48px 24px;text-align:center;color:var(--ink-500);
}
.empty-state svg{width:28px;height:28px;margin:0 auto 14px;fill:none;stroke:var(--ink-300);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state strong{display:block;color:var(--ink-900);font-size:16px;margin-bottom:6px}
.empty-state span{font-size:14px}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overscroll-behavior-x:contain;
}
table{width:100%;min-width:760px;border-collapse:collapse}
thead th{
  background:var(--bg);text-align:left;padding:16px 22px;font-size:12.5px;font-weight:700;
  color:var(--ink-500);letter-spacing:.04em;white-space:nowrap;
}
thead th:first-child{border-top-left-radius:var(--r-lg)}
thead th:last-child{border-top-right-radius:var(--r-lg)}
tbody td{padding:18px 22px;border-top:1px solid var(--line);font-size:15px;color:var(--ink-700)}
tbody td:first-child{font-weight:700;color:var(--ink-900);white-space:nowrap}
tbody tr{transition:background .2s var(--ease)}
tbody tr:hover{background:rgba(255,241,236,.6)}
.table-note{margin-top:14px;font-size:12.5px;line-height:1.8;color:var(--ink-500)}
.table-note a{color:var(--brand-600);border-bottom:1px dashed var(--brand-500)}

/* ---------- steps ---------- */
.steps-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.step{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);
}
.step:first-child{padding-top:0}
.step:last-child{border-bottom:0;padding-bottom:0}
.step-num{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;background:var(--dark);color:var(--lime-400);
  display:grid;place-items:center;font-size:14px;font-weight:800;letter-spacing:.02em;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:6px}
.step p{font-size:15px;line-height:1.85;color:var(--ink-500)}
.step-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1)}
.step-figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
.step-figure figcaption{padding:14px 20px;font-size:13px;color:var(--ink-500);border-top:1px solid var(--line)}

/* ---------- faq ---------- */
.faq{max-width:880px;display:flex;flex-direction:column;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq details:hover{border-color:var(--brand-100);box-shadow:var(--sh-1)}
.faq details[open]{border-color:var(--brand-100);box-shadow:var(--sh-1)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;font-size:16px;font-weight:700;color:var(--ink-900);
}
.faq summary::-webkit-details-marker{display:none}
.faq .plus{position:relative;width:20px;height:20px;flex-shrink:0;color:var(--ink-500);transition:transform .2s var(--ease),color .2s var(--ease)}
.faq .plus::before,.faq .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq .plus::before{width:14px;height:1.8px}
.faq .plus::after{width:1.8px;height:14px}
.faq details[open] .plus{transform:rotate(45deg);color:var(--brand-600)}
.faq .answer{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ---------- cta ---------- */
.cta{padding:56px 0 72px}
.cta-box{
  position:relative;overflow:hidden;background:var(--dark);border-radius:var(--r-xl);
  padding:48px 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.cta-box::before{
  content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,84,45,.35),rgba(242,84,45,0) 70%);
}
.cta-box::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,#FFFFFF 0 2px,transparent 2px 14px);
}
.cta-box > *{position:relative;z-index:1}
.cta h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700}
.cta .lead{margin-top:14px;font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.72);max-width:520px}
.trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.trust span{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.82);
}
.trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime-400)}
.form-card{background:#fff;border-radius:var(--r-md);padding:28px;box-shadow:var(--sh-2)}
.form-card h3{font-size:17px;font-weight:700;margin-bottom:6px}
.form-card .form-sub{font-size:13px;color:var(--ink-500);margin-bottom:18px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.field label{font-size:13px;font-weight:600;color:var(--ink-700)}
.field input{
  height:48px;border:1px solid var(--line);border-radius:var(--r-sm);padding:0 16px;
  background:#fff;font-size:15px;transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.field input::placeholder{color:var(--ink-300)}
.field input:focus{outline:none;border-color:transparent;box-shadow:0 0 0 2px var(--brand-500)}
.agree{margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--ink-300)}
.form-status{margin-top:12px;font-size:13px;color:var(--accent-500);min-height:20px;font-weight:600}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--dark);color:rgba(255,255,255,.72);margin-top:8px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-line)}
.footer-top{padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin:18px 0 22px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.socials{display:flex;gap:10px}
.socials a{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.78);
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.socials a svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.socials a:hover{background:var(--lime-400);color:var(--dark);border-color:transparent}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .22s var(--ease)}
.footer-links a:hover{color:var(--lime-400)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.66)}
.footer-contact strong{color:rgba(255,255,255,.92);font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:20px 0}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--dark);color:var(--lime-400);display:grid;place-items:center;border:0;cursor:pointer;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);z-index:40;
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{background:var(--brand-500);color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 32px}
  .burger{display:flex}
  .nav-menu{
    position:fixed;inset:0;z-index:60;background:#fff;flex-direction:column;align-items:stretch;gap:12px;
    margin:0;padding:84px 20px 140px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  }
  .site-header.open .nav-menu{opacity:1;visibility:visible;transform:none}
  .nav-menu li{width:100%}
  .nav-link{
    width:100%;height:56px;justify-content:flex-start;gap:12px;padding:0 18px;font-size:16px;
    background:var(--bg);border-radius:var(--r-md);
  }
  .nav-link::after{display:none}
  .nav-link::before{
    content:"→";order:2;margin-left:auto;display:block;color:var(--ink-300);font-weight:600;
  }
  .nav-link.active{background:var(--brand-50);color:var(--brand-600)}
  .nav-actions .btn-primary{display:none}
  .site-header.open .nav-actions{
    position:fixed;left:0;right:0;bottom:0;z-index:61;display:flex;margin:0;padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    background:linear-gradient(to top,#fff 72%,rgba(255,255,255,0));
  }
  .site-header.open .nav-actions .btn-primary{display:inline-flex;width:100%}
  .site-header.open .burger{position:fixed;top:12px;right:16px;z-index:62;background:#fff}
  .page-head-grid{grid-template-columns:1fr;gap:28px;align-items:start}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .steps-layout{grid-template-columns:1fr;gap:32px}
  .cta-box{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:64px 0}
  .to-top{right:18px;bottom:18px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .nav-inner{gap:12px}
  .brand-text{font-size:16.5px}
  .page-head{padding:32px 0 40px}
  .topic-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-head{margin-bottom:24px}
  .search{flex-direction:column;align-items:stretch}
  .search input{width:100%}
  .search .btn{width:100%}
  .cta-box{padding:32px 20px}
  .form-card{padding:22px}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .topic-card{padding:20px}
  .faq summary{padding:16px 18px;font-size:15px}
  .faq .answer{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}